Melting Glaciers Cause One-Third of Sea-Level Rise

The world's glaciers lost 260 gigatons of water each year between 2003 and 2009, making these rivers of ice responsible for almost a third of sea-level rise in that time, new research finds.

The study, to appear tomorrow (May 17) in the journal Science, used multiple methods to pin down estimates of how much ice is lost from glaciers. The results suggest that on-the-ground measurements yield estimates that are too extreme, but some satellite methods don't go far enough.